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Posted to issues@tajo.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2014/10/12 00:54:33 UTC

[jira] [Commented] (TAJO-1113) SubQuery in KILLED state should handle unexpected events.

    [ https://issues.apache.org/jira/browse/TAJO-1113?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14168395#comment-14168395 ] 

ASF GitHub Bot commented on TAJO-1113:
--------------------------------------

GitHub user hyunsik opened a pull request:

    https://github.com/apache/tajo/pull/199

    TAJO-1113: SubQuery in KILLED state should handle unexpected events.

    

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/hyunsik/tajo TAJO-1113

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/tajo/pull/199.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #199
    
----
commit 01d8d1a09a2cb7317c6a53f94be18f5d55c47248
Author: Hyunsik Choi <hy...@apache.org>
Date:   2014-10-11T22:14:04Z

    TAJO-1113: SubQuery in KILLED state should handle unexpected events.

----


> SubQuery in KILLED state should handle unexpected events.
> ---------------------------------------------------------
>
>                 Key: TAJO-1113
>                 URL: https://issues.apache.org/jira/browse/TAJO-1113
>             Project: Tajo
>          Issue Type: Bug
>          Components: query master
>            Reporter: Hyunsik Choi
>            Assignee: Hyunsik Choi
>            Priority: Blocker
>             Fix For: 0.9.0
>
>
> Currently, {{KILLED}} state in SubQuery does not handle any event. As I mentioned in TAJO-1111, {{QueryUnit}} in even terminal states may receive additional unexpected events from a running tasks because a running task reporter sends a progress periodically; that is the report is not synchronized with a task life cycle. As a result, When a killed {{QueryUnit}} receives unexpected events, it can cause some event towards {{SubQuery}}. But, {{SubQuery}} does not handle any addition events if {{SubQuery}} is already in {{KILLED}}.
> This patch adds some transitions to SubQuery in order to fix the above problem.



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